TROJ_MONKIF.AA
Microsoft: TrojanDownloader:Win32/Monkif.T; Ikarus:Trojan-Downloader.Win32.Monkif
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
This Trojan may be dropped by other malware.
It may be injected into processes running in memory.
TECHNICAL DETAILS
Arrival Details
This Trojan may be dropped by other malware.
Installation
This Trojan adds the following mutexes to ensure that only one of its copies runs at any one time:
- Local\UIEI
It may be injected into processes running in memory.
Process Termination
This Trojan terminates the following processes if found running in the affected system's memory:
- AAWService.exe
- AAWTray.exe
- ABregmon.exe
- ACAAS.exe
- ACAEGMr.exe
- ACAIS.exe
- ACALS.exe
- ACASP.exe
- ACenter.exe
- AFMain.exe
- AGB6.exe
- AGBKrnl.exe
- AGIDSUI.exe
- ALMon.exe
- ALive.exe
- ALsvc.exe
- APVXDWIN.EXE
- ARCATA~1.EXE
- AScheduleService.exe
- AVGIDSAgent.exe
- AVGIDSMonitor.exe
- AVGIDSWatcher.exe
- AVKProxy.exe
- AVKService.exe
- AVKTray.exe
- AVKWCtl.exe
- AVMenu.exe
- Ad-Aware.exe
- AhnSD.exe
- AhnSDsv.exe
- AluSchedulerSvc.exe
- ApVxdWin.exe
- ArcaBackupService.exe
- ArcaBit.Core.Configurator2.exe
- ArcaRemoteSvc.exe
- Arcabit.Core.LoggingService.exe
- BDTUpdateService.exe
- CAGlobal.exe
- CAGlobalLight.exe
- CAPPActiveProtection.exe
- CCSVCHST.EXE
- CClaw.exe
- CONSCTL.exe
- CounterSpy.exe
- EMLPROUI.EXE
- EMLPROXY.EXE
- FAMEH32.exe
- FCH32.exe
- FPAVServer.exe
- FProtTray.exe
- FSM32.exe
- FSMA32.exe
- FSMB32.exe
- FileMonSV.exe
- ForceField.exe
- GDFirewallTray.exe
- GDFwSvc.exeray.exe
- GDSC.exe
- GDScan.exe
- HFACSvc.exe
- HrRes.exe
- IFace.exe
- ISWSVC.exe
- ITMRTSVC.exe
- K7EmlPxy.exe
- K7FWSrvc.exe
- K7PSSrvc.exe
- K7RTScan.exe
- K7SysMon.exe
- K7SysTry.exe
- K7TSMngr.exe
- K7TSecurity.exe
- KVMonXp.kxpxe
- KVSrvXP.exe
- KVXp.kxpkxp
- MAILDISP.EXE
- MSASCui.exe
- MSProxy.ahn
- MWAGENT.exe
- MWASER.exe
- McNASvc.exe
- McProxy.exe
- McSACore.exe
- Mcshield.exe
- MpfSrv.exe
- MsMpEng.exe
- Nbrowser.exe
- NetMonSV.exe
- Nip.exe
- Njeeves.exe
- Nsesvc.exe
- Nvcoas.exe
- ONLINENT.EXE
- ONLNSVC.exe
- OPSSVC.exe
- OcHealthMon.exe
- PAVSRV51.EXE
- PPCtlPriv.exe
- PSANHost.exe
- PSHost.exe
- PSUNMain.exe
- PXAgent.exe
- PXConsole.exe
- PavBckPT.exe
- PavFnSvr.exe
- PavPrSrv.exe
- PslmSvc.exe
- QOELoader.exe
- QUHLPSVC.EXE
- RavMon.exe
- RavTask.exe
- RsTray.exe
- SAVAdminService.exe
- SBAMSvc.exe
- SBAMTray.exe
- SBCSSvc.exe
- SBCSTray.exe
- SCANMSG.exe
- SCANWSCS.exe
- SSU.exe
- SSU.exeperUI.exe
- SavService.exe
- SfCtlCom.exe
- SpIDerAgent.exe
- SpIDerMI.exe
- SpySweeper.exe
- SpySweeperUI.exe
- SpybotSD.exe
- TDWatch.exe
- TFService.exe
- THAV.exe
- THD32.exe
- THSM.exe
- TMBMSRV.exe
- TRAYSSER.EXE
- TRYICOS.exe
- TSCFCommander.exe
- TSCFPlatformCOMSvr.exe
- TeaTimer.exe
- TmPfw.exe
- TmProxy.exe
- UPSCHD.exe
- UfNai.exe
- UfSeAgnt.exe
- UfUpdUi.exe
- UmxAgent.exe
- UmxCfg.exe
- UmxFwHlp.exe
- UmxPol.exe
- VMwareService.exe
- VMwareTray.exe
- VMwareUser.exe
- WEBPROXY.EXE
- WRConsumerService.exe
- WinSSUI.exe
- Zanda.exe
- Zlh.exe
- a2guard.exe
- a2services.exe
- a2start.exe
- acs.exe
- arcarvir.exe
- ashDisp.exe
- ashMaiSv.exe
- ashServ.exe
- ashWebSv.exe
- aswUpdSv.exe
- avas.exe
- avcom.exe
- avesvc.exe
- avgam.exe
- avgamsvr.exe
- avgas.exe
- avgcc.exe
- avgcsrvx.exe
- avgemc.exe
- avgfws8.exe
- avgnsx.exe
- avgrsx.exe
- avgtray.exe
- avgui.exe
- avgupd.exe
- avgupsvc.exe
- avgwdsvc.exe
- avgwsvc.exe
- avinitnt.exe
- avmgma.exe
- avp.exe
- avpmapp.exe
- avtray.exe
- avwebgrd.exe
- caavguiscan.exe
- capfasem.exe
- cappactiveprotection.exe
- casc.exe
- casecuritycenter.exe
- cavrid.exe
- ccSvcHst.exe
- ccschedulersvc.exe
- cctray.exe
- cfp.exe
- cmdagent.exe
- drwebscd.exe
- dvpapi.exe
- dvprpt.exe
- econceal.exe
- econser.exe
- egui.exe
- ekrn.exe
- elogsvc.exe
- escanmon.exe
- forsp.exe
- fsaua.exe
- fsav32.exe
- fsavgui.exe
- fsdfwd.exe
- fsgk32.exe
- fsgk32st.exe
- fsguidll.exe
- fspc.exe
- fsqh.exe
- fssm32.exe
- fsus.exe
- gozer.exe
- guard.exe
- guardxkickoff.exe
- guardxservice.exe
- guardxup.exe
- hcontain.exe
- hpcsvc.exe
- hsvcmod.exe
- isafe.exe
- kavstart.exe
- kissvc.exe
- kmailmon.exe
- kpfw32.exe
- kpfwsvc.exe
- kwatch.exe
- livesrv.exe
- mcagent.exe
- mcmscsvc.exe
- mcshell.exe
- mcsysmon.exe
- mcupdmgr.exe
- mcvsmap.exe
- mcvsshld.exe
- mdmcls32.exe
- msfwsvc.exe
- msksrver.exe
- msseces.exe
- npcsvc32.exe
- npfsvc32.exe
- npfuser.exe
- nprosec.exe
- nuaa.exe
- nvcsched.exe
- nvoy.exe
- op_mon.exe
- pctsAuxs.exe
- pctsGui.exe
- pctsSvc.exe
- pctsTray.exe
- prevx.exe
- psksvc.exe
- qhfw.exe
- rsnetsvr.exe
- sbamui.exe
- seccenter.exe
- spiderml.exe
- spidernt.exe
- spidersgate.exe
- spiderui.exe
- svcprs32.exe
- symlcsvc.exe
- syssvcnt.exe
- tpcfg.exe
- tppfdmm.exe
- tptray.exe
- uiscan.exe
- untray.exe
- vba32ldr.exe
- vbcmserv.exe
- vbsystry.exe
- vetmsg.exe
- virCatch.exe
- virusutilities.exe
- vmacthlp.exe
- vrfwsock.exe
- vrfwsvc.exe
- vrmonnt.exe
- vrmonsvc.exe
- vrrepair.exe
- vrscan.exe
- vsmon.exe
- vsserv.exe
- winss.exe
- winssnotify.exe
- xcommsvr.exe
- zlclient.exe
Download Routine
This Trojan connects to the following website(s) to download and execute a malicious file:
- {BLOCKED}.{BLOCKED}.7.152
- www.{BLOCKED}edia.com
- www.{BLOCKED}ies.com
NOTES:
It creates the following registry entries to install itself as an MIME filter for Internet Explorer:
HKEY_CURRENT_USER\Software\Classes\PROTOCOLS\Filter\text/html
(Default} = "Microsoft Improved HTML MIME Filter"
HKEY_CURRENT_USER\Software\Classes\PROTOCOLS\Filter\text/html
CLSID = {Random UUID}
HKEY_CURRENT_USER\Software\CLSID\{Random UUID}\InProcServer32
(Default) = "{Malware Path and File Name}"
HKEY_CURRENT_USER\Software\CLSID\{Random UUID}\InProcServer32
ThreadingModel = "Apartment"
SOLUTION
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Scan your computer with your Trend Micro product and note files detected as TROJ_MONKIF.AA
Step 3
Restart in Safe Mode
Step 4
Search and delete the file detected as TROJ_MONKIF.AA
Step 5
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Classes\PROTOCOLS\Filter\text/html
- (Default} = "Microsoft Improved HTML MIME Filter"
- (Default} = "Microsoft Improved HTML MIME Filter"
- In HKEY_CURRENT_USER\Software\Classes\PROTOCOLS\Filter\text/html
- CLSID = {Random UUID}
- CLSID = {Random UUID}
- In HKEY_CURRENT_USER\Software\CLSID\{Random UUID}\InProcServer32
- (Default) = "{Malware Path and File Name}"
- (Default) = "{Malware Path and File Name}"
- In HKEY_CURRENT_USER\Software\CLSID\{Random UUID}\InProcServer32
- ThreadingModel = "Apartment"
- ThreadingModel = "Apartment"
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_MONKIF.AA. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
Step 7
Scan your computer with your Trend Micro product to delete files detected as TROJ_MONKIF.AA. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
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